"So happy! Just had a baby boy, Bingham 'Bing' Hawn Bellamy. Born 7Ib 12Oz, on 9th July," he wrote. "Mum and baby are strong and healthy. Mum was a warrior, Bing popped out after 4.5 hours of intense pushing!"

Hudson also has a seven-year-old son with her ex-husband, Black Crowes singer Chris Robinson. His name is Ryder.

GABRIEL BOUYS/AFP/Getty Images(LOS ANGELES) -- Eighty of Kate Hudson’s closest friends and family members threw a baby shower for the expecting mom in Malibu, California, on Sunday. A guest at the shower, held at a private home, told People that Hudson “was gifted with gender neutral baby items,” since she and fiance/Muse frontman Matt Bellamy don’t know the sex of their baby.

The source said that Hudson, who is due in July, “looked amazing and kept giggling while mingling with friends, nibbling on food and playing games. She seemed to have the best time." Some of the guests in attendance were Courteney Cox, Jessica Capshaw, and Jennifer Meyer Maguire.